neural groove n.
The gutterlike groove formed in the midline of the embryo's dorsal surface by the progressive elevation of the lateral margins of the neural plate, resulting in the formation of the neural tube. Also called medullary groove.
In the Chick certain of the cranial nerves arise before the complete closure of the neural groove.
neural groove: is that furrow in the primitive layer of the embryo in which the nerve cord is formed.